In January 1897 he carried the work of excavation farther.
Above sea-level, excavation has revealed a vast area of 330 acres, girt with a stone and wood rampart 3 m.
The New, or Roman, Agora to the north of the Acropolis, perhaps mainly an oil market, was constructed after the year 27 B.C. Its dimensions were practically determined by excavation in 1890-1891.
In the oldest form of this class of working, where the size of the pillar is equal to the width of the stall or excavation, about 4 of the whole seam will be removed, the remainder being left in the pillars.